Which out of the following does not help in disinfecting water?
- Filtration
- Chlorine Tablets
- Alums
- Boiling
Answer: Filtration
Explanation: The correct answer is Filtration. Filtration is a process used to separate solids from liquids or gases by using a filter medium that allows fluid to pass through but not solid. Filtration can be mechanical-biological or physical. It does not help in disinfecting water.